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Reduction PAPR of OFDM Signals by Combining Grouped DCT Precoding with PTS

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DOI: 10.4236/jsip.2014.54016    2,384 Downloads   2,961 Views   Citations
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Zhongpeng Wang1,2, Shoufa Chen1

Affiliation(s)

1School of Information and Electronic Engineering, Zhejiang University of Science and Technology, Hangzhou, China.
2State Key Laboratory of Millimeter Waves, Southeast University, Nanjing, China.

ABSTRACT

The high peak-to-average power ratio (PAPR) is one of the serious problems in the application of OFDM technology. In this paper, an improved partial transmit sequence (PTS) scheme based on combining the grouped discrete cosine transform (DCT) with PTS technique is proposed. In the proposed scheme, the adjacent partitioned data are firstly transformed by a DCT into new modified data. After that the proposed scheme utilizes the conventional PTS technique to further reduce the PAPR of the OFDM signal. The performance of the PAPR is evaluated using a computer simulation. The simulation results indicate that the proposed scheme may improve the PAPR performance compared with the conventional PTS scheme, the grouped DCT scheme, and original OFDM respectively.

KEYWORDS

Orthogonal Frquency-Division Multiplexing (OFDM), Peak-to-Average Power Ratio (PAPR), Partial Transmit Sequence (PTS), Discrete Cosine Transform (DCT)

Cite this paper

Wang, Z. and Chen, S. (2014) Reduction PAPR of OFDM Signals by Combining Grouped DCT Precoding with PTS. Journal of Signal and Information Processing, 5, 135-142. doi: 10.4236/jsip.2014.54016.

Conflicts of Interest

The authors declare no conflicts of interest.

References

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http://dx.doi.org/10.1049/el:19970266

  
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